1. highest frequency

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

20000Hz

Sony MDR-Z1R: 120000Hz

45000Hz

2. lowest frequency

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

20Hz

Sony MH1CBLK: 1Hz

5Hz

3. weight

101g lighter.

209g

Sony MDR-EX150AP: 3g

310g

4. has sound isolation/passive noise reduction

The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

45% have it

5. impedance

Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.

32 Ohms

Flips Solo 2 Social: 4 Ohms

38 Ohms

6. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

114dB/mW

AKG K553 Pro: 144dB/mW

97dB/mW

7. no battery needed

This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

69% have it

8. has a detachable cable

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

39% have it

9. can be folded

Folding devices are good for transporting as they take up less space in your bag.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

31% have it

10. can be used as a headset

A headset is one headphone or pair with a built-in microphone. Headsets can be used for applications which require communication i.e. Skype, games with voice chat, mobile phones etc.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

41% have it

11. has stereo speakers

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

76% have it

12. driver unit size

The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.

40mm

Audeze LCD2 Classic: 106mm

45mm

13. Can be used wirelessly

Wireless devices allow users more freedom of movement.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

21% have it

14. has an over-the-ear form

Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.

15. control panel placed on a device

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

17% have it

16. has included ear pads

Allows you to change ear pads without buying new ones.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

42% have it

17. travel bag is included

The device comes with its own special case or pouch, which is useful for safe transportation.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

63% have it

18. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

50% have it

19. has an L-shaped plug

An L-shaped plug is better if the jack is on the left or right side of the device, so that the cable isn't bent, and is less likely to break when the device is in your pocket.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

31% have it

20. has a battery level indicator

An indicator shows you when the device has low battery.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

12% have it

21. has a 3.5mm male connector

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

83% have it

22. has an on-ear form

This device comfortably rests on top of your outer ears. As it doesn't block out everything from the outside world, it's preferred in places like office environments and recommended for outdoor activities.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

23% have it

23. sweat resistant

Resistance to sweat makes it ideal for use while doing sports.

TDK ST700 High Fidelity

Audio Technica ATH-DSR9BT

11% have it

24. has a coiled cord

A coiled cord typically offers more flexibility as it can be extended, and taken outside for example.

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